$input = <STDIN>;
if($input eq "hehe\n"){
	print "1:input is hehe\\n";
}
if($input eq "hehe"){
	print "2:input is hehe";
}
chomp($input);
if($input eq "hehe"){
	print "3:input is hehe";
}else{
	print "3:input is $input";
}
